diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index b0a8210..4c655c2 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -56,7 +56,7 @@ jobs:
 
       - name: Run
         working-directory: build
-        run: ctest --output-on-failure -j ${{steps.cores.outputs.count}}
+        run: ctest --output-on-failure
 
       - name: Generate coverage report
         run: |
diff --git a/.github/workflows/ubuntu-latest-clang.yml b/.github/workflows/ubuntu-latest-clang.yml
index af97cab..21b0f5a 100644
--- a/.github/workflows/ubuntu-latest-clang.yml
+++ b/.github/workflows/ubuntu-latest-clang.yml
@@ -66,4 +66,4 @@ jobs:
 
       - name: Run
         working-directory: build
-        run: ctest --output-on-failure -j ${{steps.cores.outputs.count}}
+        run: ctest --output-on-failure
diff --git a/.github/workflows/ubuntu-latest-gcc.yml b/.github/workflows/ubuntu-latest-gcc.yml
index 988c4b5..aaecde6 100644
--- a/.github/workflows/ubuntu-latest-gcc.yml
+++ b/.github/workflows/ubuntu-latest-gcc.yml
@@ -56,4 +56,4 @@ jobs:
 
       - name: Run
         working-directory: build
-        run: ctest --output-on-failure -j ${{steps.cores.outputs.count}}
+        run: ctest --output-on-failure
diff --git a/.github/workflows/ubuntu-latest-icc.yml b/.github/workflows/ubuntu-latest-icc.yml
index 7589198..72d837f 100644
--- a/.github/workflows/ubuntu-latest-icc.yml
+++ b/.github/workflows/ubuntu-latest-icc.yml
@@ -74,4 +74,4 @@ jobs:
 
       - name: Run
         working-directory: build
-        run: ctest --output-on-failure -j ${{steps.cores.outputs.count}}
+        run: ctest --output-on-failure
diff --git a/.github/workflows/win-msvc.yml b/.github/workflows/win-msvc.yml
index 692af83..4bc7759 100644
--- a/.github/workflows/win-msvc.yml
+++ b/.github/workflows/win-msvc.yml
@@ -62,4 +62,4 @@ jobs:
       - name: Run
         working-directory: build
         run: >-
-          ctest -C Debug --output-on-failure -j ${{steps.cores.outputs.count}}
+          ctest -C Debug --output-on-failure
diff --git a/.github/workflows/win-msys2-clang.yml b/.github/workflows/win-msys2-clang.yml
index 1dc25d8..6a0ff25 100644
--- a/.github/workflows/win-msys2-clang.yml
+++ b/.github/workflows/win-msys2-clang.yml
@@ -73,4 +73,4 @@ jobs:
 
       - name: Run
         working-directory: build
-        run: ctest --output-on-failure -j ${{steps.cores.outputs.count}}
+        run: ctest --output-on-failure
diff --git a/.github/workflows/win-msys2-gcc.yml b/.github/workflows/win-msys2-gcc.yml
index 01d6906..defed69 100644
--- a/.github/workflows/win-msys2-gcc.yml
+++ b/.github/workflows/win-msys2-gcc.yml
@@ -71,4 +71,4 @@ jobs:
 
       - name: Run
         working-directory: build
-        run: ctest --output-on-failure -j ${{steps.cores.outputs.count}}
+        run: ctest --output-on-failure